Incandescent-lamp socket.



L. J. GASTONGUAY. INOANDESOENT LAMP sooxm.

APPLICATION FILED JAN.21,1910.

Patented Mar. 7, 1911.

WITFD STATES PATENT UFFI CE.

LEGER J. CAS'I'ONGUAY, or nmnenroar, CONNECTICUT, ASSIGNOR TO THErEakINs ELECTRIC SWITCH MANUFACTURING COMPANY, or nnrnenro'nr, CONECTICUT,"

A CORPORATION OF CONNECTICUT.

INCANDESOENT-LAMP SOCKET.

Specification of Letters Patent.

Patented Mar. '7, 1911 To all whom it may concern:

Be it known that I, LECER J. CASTONGUAY, a citizen of the United Statesof America, residing in the cit of Brid eport, in the county of Fairficlin the tate of Connecticut', have invented certain new and usefulImprovements in Incandescent-Lam Sockets, of which the following is aspoolfication.

One of the main objects of my invention is to so construct a key socketfor electric incandescent lamps that the axis of tlie'key handl willalways be substantially at rightangles 0 the axis of the lamp socket nomatter to what position it may be turned, and a further object is toconstruct an efficient key socket with double break.

In the accompanying drawings Figure 1 is a vertical section er a socketconstructed. in accordance with my invention, the lined cap and shellbeing omitted for the sake of simplicity, and the key being shown in theposltion in which the circuit is closed; Fig. 2 is a similar sectionalview, showing the key turned to the position where the circuit 1sbroken; Fig, 3 is an inner face view of the lower insulatlng block; Flg.4 1s an 1nner face view of the upper insulating block with the switchkey Fig. 2; Fig. 5 is a switch device.

While my invention may be applied to sockets of a single insulatingblock type, I prefer to employ the Perkins double insuating block formof the Perkins Patent N o.

in the position shown in perspective vlew of the 626,927, and I have soshown it in the accompanying drawing.

has a stem 71. which has a The lower insulating block A carries as usualthe lamp-receivin terminals S and C, the latterbeing in e ectricalconnection with a contact plate D in a recess in the inner face of thelower block A. The switch block F is in this case mounted upon a spindlef having bearings in the U-shaped frame F which in the present case isshown as secured in a suitable recess formed for it in the inner face ofthe upper block B.

I prefer to provide the lost motion connection between the handle H andthe spin dle f, and for this purpose the handle H bearing in a washer71. held n semi-circular recesses of my socket it will be seen theadjacent faces of the two blocks A and B, and those adj acent'faces ofthe two blocks On the end of the spindle f opposite that which carriesthe switch block I secure a cam block E. On this cam block E bears aspiral spring P set into the recess in the inner face of the upper blockand preferably having a bearing plate p against which the surface of thecam block may make frictional Contact. In a recess in the upper blockover the switch block F is a'spring contact plate G in electricalconnection with a binding post 12 carried by the upper block. Thescrewshell S will be in electrical connection with the other binding post 13which is shown in Fig. 3.

In the above described construction of that in one position illustratedin Fig. 1, the switch block F makes electrical connection between thespring Contact plateGconnec-ted to, the binding post 12 and the Contactplate D con nected to the lamp terminal C, and the spiral spring Pbearing on the rectangular upper end of the cam block E will tend toretain the parts in that position. When the key ,H is turned from theposition shown in Fig l to that shown in Fig. 9., the circuit will bebroken with a snap break not only between the switch block F and thespring Contact G but also between the switch block F and the contact D,thus giving a double break, and the s ring P, by acting upon the camblock E, wi I maintain the switch block F in the position shown in Fig.2, until the key is intentionally turned to another position. 7

With the construction described there will be no tilting of the key suchas is common in many types of key sockets,'but,the key handle will bemaintained with its axis always at right angles to the axis of thesocket. I claim as my invention- 1. A key so'cket having a switch blockand a spindle to which the switch block is fixedly secured, with aninsulating body, bearings for the switch block spindle, and a key handlehaving a .lost motion connection with the switch block spindle andbearings for the key handle. Y

2 A key socket having an insulating body and a spindlecarrying a switchblock and a cam block and contacts for the switch block with a spring toact upon the cam block and a key'handle having a ,lost motionconnectionwith the cam block on the spindle.

3. A key socket having an insulating body, a switch block and a camblock mounted to turn together, contacts for the switch block and aspring to act on the cam block,

and a key handle havin a lost motion connection with said spind e.

4. A key socket having an insulatingjfl body, a switch block and camblock, con- '20 tacts for the switch block, a sprin to act upon the camblock and a key han 1e with a lost motion connection between the moving.parts. a

In testimony whereof I have signed my 25 name to this specification, inthe presence of two subscribing witnesses.

LEGER J. CASTONGUAY.

Witnesses: j

G. W. Goonmnon, H. "W. GOLDSBOROUGH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatexits. Washington, D. G."

